KR100979139B1 - Squib's Shunt - Google Patents

Abstract

The object of this invention is to sufficiently obtain the holding force of the shunt by the inflator, prevent the shunt from falling off from the inflator, reduce the insertion force of the shunt into the socket, and improve the workability of the shunt into the socket.

The shunt body 300 is provided with a short circuit piece 400 for shorting a pair of pins 210 of the squib 200, and a projection 360 formed of a material having flexibility in the shunt body 300. ), And the proximal end of the protrusion 360 is formed on the outer surface of the shunt body 300, and the protrusion 360 is parallel to the central axis of the shunt body 300 and faces toward the uppermost surface 320 from the proximal end. It extends in the direction inclined outward of the shunt body 300 at an angle within 90 degrees of the direction, and the projection 360 when the tip of the projection 360 is pushed toward the connection hole 340 of the shunt body 300. The shunt of the squib configured so that the protrusion 360 is restored and protrudes into the engagement recess 114 when the shunt body 300 is fitted into the socket 110 is used as a solving means.

Description

Shunt Shunt {SHUNT OF SQUIB}

1 is a perspective view showing the housing, the shunt and the female connector of the inflator according to the first embodiment separately.

Fig. 2 is a sectional view when the shunt is fitted to the housing of the inflator of the first embodiment and is cut off at the plane including the central axis of the socket, and the squib is not sectional.

3 is a front view of the shunt of the first embodiment.

4 is a side view of the shunt of the first embodiment.

5 is a plan view of the shunt of the first embodiment.

Fig. 6 is a bottom view of the shunt of the first embodiment.

Fig. 7 is an enlarged view showing the engagement recess of the protrusion and the socket of the shunt of the first embodiment, wherein the engagement recess is a cross-sectional view taken along the plane including the central axis of the socket.

8 is a perspective view of a female connector.

Fig. 9 is a cross-sectional view when the shunt is fitted to the housing of the inflator of the first embodiment and is cut off in the plane including the central axis of the socket. The squib is not cross-sectional, and the female connector is fitted to the shunt. The part of the female connector shown is shown by the virtual line.

Fig. 10 is an enlarged view showing the engagement recess of the protrusion and the socket of the shunt of the second embodiment, wherein the engagement recess is a cross-sectional view taken along the plane including the central axis of the socket.

Fig. 11 is an enlarged view showing the engagement recess of the protrusion and the socket of the shunt of the third embodiment, wherein the engagement recess is a cross-sectional view taken along the plane including the central axis of the socket.

Fig. 12 is an enlarged view showing the engagement recess of the protrusion and the socket of the shunt of the fourth embodiment, wherein the engagement recess is a cross-sectional view taken along the plane including the central axis of the socket.

Fig. 13 is an enlarged view showing the engagement recess of the protrusion and the socket of the shunt of the fifth embodiment, wherein the engagement recess is a cross-sectional view taken along the plane including the central axis of the socket.

Fig. 14 is a cross-sectional view when the shunt of the comparative example is fitted to the housing of the inflator and is cut off in the plane including the central axis of the socket, and the squib is not sectional.

The inflator which sends gas to an airbag and deploys it has a squib (heating element). In order to supply electrical energy to this squib, a female connector is connected to a pair of pins of the squib. The present invention relates to a shunt for shorting a pair of pins of a squib until the female connector is connected to a pair of pins.

As a shunt of this kind, a pair of pins of squibs which are fitted on a socket which is opened on the surface of the housing of the inflator and which are recessed in a cylindrical shape from the opening into the housing, and protrude from the bottom of the socket. Shunts for shorting are known. The shunt has a shunt body formed in a cylindrical shape so as to fit into the socket, and a shorting piece formed in the shunt body. When the shunt body fits into the socket, the shorting piece shorts the pair of pins of the squib to prevent malfunction of the squib. When the inflator is assembled to the vehicle and the female connector is fitted to the shunt, the contact of the female connector is connected to the pair of pins of the squib, and the shorting piece is pushed by the female connector to separate from the pair of pins of the squib. The operation circuit of the squib is activated to enable the inflator. The socket disclosed in this publication is provided with a coupling recess that is recessed radially outward from the inner circumferential surface in the middle portion in the depth direction. A claw formed on the engaging piece of the female connector engages in the engagement recess, whereby the female connector is held in the inflator (see Japanese Patent Laid-Open No. 2002-151181, for example).

As a structure for holding such a shunt in the socket, it is conceivable to form a bulging portion which is convex outward on the outer circumferential surface of the shunt body so as to fit the engaging recess. In that case, when the shunt is inserted into the socket, the swelling portion is pushed toward the bottom of the socket while being pushed toward the center of the shunt by the inner circumferential surface of the socket, and when it reaches the depth of the engaging recess, it is restored and fitted into the engaging recess. In that case, the fitting depth to the engaging concave portion of the bulge is extremely small because it is obtained by restoration from compression deformation of the bulge and the shunt body. In addition, the swollen portion is scratched by friction with the inner circumferential surface of the socket while moving toward the bottom of the socket, whereby the fitting depth of the bulge portion into the engaging recess is reduced. Therefore, the holding force of the shunt by the inflator cannot be sufficiently obtained, for example, a problem arises that the shunt is removed from the inflator during transportation. In addition, if the fitting depth to the engagement recess of the bulge portion is small, the effect is small at the time of fitting, and the so-called click feeling is insufficient, making it difficult to confirm the fitting. For this reason, there is a misconception that they are fitted even though they are in a half-fitting state where they are not completely fitted. In such a case, the holding force of the shunt by the inflator is hardly obtained, and the shunt is easily removed from the inflator. When the shunt is fitted to the socket, the insertion force is increased by friction between the bulging portion and the inner circumferential surface of the socket, thereby impairing the assembly workability.

The present invention has been made in view of this point, and its object is to form a projection projecting obliquely on the outer surface of the shunt body, and when the shunt is inserted into the socket, the projection is bent and deformed to escape inward, When the shunt body fits into the socket, the projections are restored to protrude into the engagement recesses, thereby sufficiently obtaining the holding force of the shunt by the inflator, preventing the shunt from falling off the inflator, and reducing the insertion force of the shunt into the socket. It is to improve the assembly workability of the shunt to the socket.

In order to achieve the above object, the shunt of the squib of the present invention is opened on the surface of the housing of the inflator, and is cylindrically concave from the opening into the housing, and radially from the inner circumferential surface in the middle portion in the depth direction. A shunt for fitting a pair of pins of a squib protruding from the bottom of the socket while being fitted into a socket having a coupling recess that is recessed outwardly of the socket. The shunt of the squib is fitted into the socket. A shunt body is formed in a cylindrical shape, and a shunt body is formed through the connection hole through which a pair of pins of a squib enters from the bottom face side and the female connector is fitted from the top face side. The shunt body is formed in the socket. When fitted, it contacts a pair of pins on the squib, and when the female connector fits into the connection hole, And a shorting piece falling from a pair of fins of the squib and a protrusion formed by a material having flexibility and formed on the shunt body, the proximal end of the protrusion being formed on the outer surface of the shunt body, It extends in the direction inclined to the outside of the shunt body at an angle within 90 degrees from the direction parallel to the central axis of the shunt body and toward the top surface, and the protrusion is bent when the tip of the projection is pushed toward the connection hole of the shunt body. And when the shunt body is fitted to the socket, the protrusion is restored to protrude into the engagement recess.

When this shunt body is fitted to the socket, a pair of pins of the squib enter the connection hole from the bottom face side. At this time, since the shorting piece contacts both pins and shorts them, the squib does not function. When the female connector is fitted into the connection hole from the top surface side, the short-circuit piece is pushed by the female connector to be separated from the pair of pins, and the contact of the female connector is connected to the pair of pins, thereby operating the squib's operation circuit. The inflator is enabled.

When assembling the shunt into the socket, when the shunt is inserted into the socket, the tip of the projection is pushed toward the connection hole of the shunt body by the inner peripheral surface of the socket, and the projection is bent and deformed and escaped toward the connection hole. In this case, since the projections are bent and deformed, a large displacement of the tip can be obtained even with a small force as compared with compressing and deforming the bulge portion and the shunt body. Therefore, as compared with providing a bulge on the outer circumferential surface of the shunt body, frictional forces acting on the inner circumferential surface of the protrusion and the socket are reduced. As a result, the insertion force of the shunt into the socket is reduced, and the workability of assembling the socket into the socket is improved.

When the shunt body fits into the socket, the projections are restored and protrude enough length into the engagement recesses. In addition, since frictional forces acting on the projections and the inner circumferential surface of the socket are reduced, scratches of the projections are reduced. Therefore, the engagement length with the engaging recess of the projection is sufficiently long, the holding force of the shunt by the inflator is improved, and the falling off of the shunt from the inflator is reliably prevented.

When the projection protrudes into the engagement recess, the tip is greatly deformed by restoring from the state where the projection is bent and deformed, so that a sufficient effect occurs and a clear feeling of click is obtained. Therefore, it becomes easy to confirm that the projection is engaged with the engaging recess, and the work is not finished in the state of semi-coupling not completely engaged. Therefore, the holding force of the shunt by the inflator is improved, and the falling off of the shunt from the inflator is reliably prevented.

The shunt of the squib according to the present invention forms a protrusion projecting obliquely on the outer surface of the shunt body, and when the shunt is inserted into the socket, the protrusion is bent and deformed inward, and the protrusion is fitted when the shunt body is fitted into the socket. It was restored and made to protrude into a joining recess. Therefore, the length of engagement with the engagement recess of the protrusion is sufficiently long, and the engagement of the protrusion to the engagement recess of the protrusion can be easily confirmed by the click feeling, thereby preventing the anti-bonding. Therefore, the holding force of the shunt by the inflator is improved, and the dropping of the shunt from the inflator can be reliably prevented. In addition, the insertion force of the shunt into the socket can be reduced, and the workability of assembling the shunt into the socket can be improved.

Hereinafter, an embodiment of the shunt S of the squib according to the present invention will be described. Fig. 1 shows the shunt S of the first embodiment and the members around it. 100 is the housing of the inflator. Inside the housing 100, a squib 200 that receives electric energy and generates heat is fixed, and an ignition agent and a gas generator are disposed around the squib 200. The retracted airbag is accommodated on the back side of the inflator. When the squib 200 receives electrical energy and generates heat, the ignition agent is ignited, whereby the gas generating agent generates gas, and the gas deploys the airbag.

1 and 2, the socket 110 is provided in the housing 100 of the inflator. The socket 110 is opened on the surface of the housing 100, and is recessed in a cylindrical shape from the opening 112 to the inside of the housing 100. In the socket 110, the direction parallel to the center axis of this cylinder and inward of the housing 100 is made into the depth direction (D1 of FIG. 2), and the direction along the radius of the cylinder is radial direction (FIG. 2). R1), and the direction along the circumference of a cylinder is set to the circumferential direction (C1 of FIG. 1). In the middle portion of the socket 110 in the depth direction, the engagement recess 114 is formed to be recessed radially outward from the inner circumferential surface 113. The radially outer side is a side in which the radius increases along the radial direction. As shown in Fig. 2, in this embodiment, the engagement recesses 114 are continuous in the circumferential direction and are groove-shaped. However, it is good also as a hole shape so that the engagement recessed part 114 may not be continued in a circumferential direction, and the number of engagement recessed parts 114 at that time is arbitrary. As shown in Fig. 2 and Fig. 7, the engagement recess 114 of this embodiment has a trapezoidal cross section of the engagement recess 114 when the housing 100 is cut in the plane including the central axis of the socket 110. It is formed so that it may become. This cross section includes the first surface 114a on the side close to the opening of the socket 110, the second surface 114b on the side away from the opening 112 of the socket 110, and these two surfaces 114a and 114b. ) Is composed of a third surface 114c which connects from the inside. The first surface 114a, which is a surface on the side close to the opening 112 of the socket 110, is inclined so as to be close to the central axis of the cylinder of the socket 110 toward the opening 112. However, this invention does not limit the cross-sectional shape of the engagement recessed part 114 to this, For example, the 1st surface which is a surface near the opening of a socket, and the 2nd surface which is a surface far from the opening of a socket are In the case of being substantially parallel, various examples are included, such as the case where a cross-sectional shape is circular arc shape. The squib 200 is fixed to a portion inside the socket 110 in the housing 100 of the inflator. In the squib 200, a pair of fins 210, which are connected to a built-in heater, protrude, and the pair of fins 210 is opened from the bottom surface 111 of the socket 110 at the center of the socket 110. Sticks out toward you.

The shunt S is fitted into the socket 110, and the shunt S short-circuits the pair of pins 210 of the squib 200. 3 to 6, the shunt S includes a shunt body 300 and a shorting piece 400 formed on the shunt body 300.

The shunt body 300 is formed in a cylindrical shape so as to fit the socket 110 by an insulator. In this case, the basic shape may be cylindrical, and some deformation is allowed. It demonstrates according to the direction (D2 of FIG. 3) along the central axis of this cylinder, the direction (R2 of FIG. 3) along the radius of a cylinder, and the direction (C2 of FIG. 5) along a circumference. In the center of the shunt body 300, a connection hole 340 penetrating from the bottom surface 310 to the top surface 320 along the central axis of the cylinder is formed. The pair of pins 210 of the squib 200 enter the connection hole 340 from the bottom face side. The top surface side of the connection hole 340 is formed in the shape corresponding to the boss 520 of the female connector 500 so that the female connector 500 mentioned later may be fitted.

The shorting piece 400 contacts the pair of pins 210 of the squib 200 when the shunt body 300 is fitted to the socket 110, and the female connector 500 is connected to the connection hole 340. When fitted, it is pushed by the female connector 500 and separated from the pair of pins 210 of the squib 200. The short circuit piece 400 is formed of a conductor, and one end thereof is fixed to a portion near the top surface 320 of the shunt body 300. From one end 410 of the short-circuit piece 400, two contact pieces 420 bent in an L-shape are branched, and these contact pieces 420 face the bottom surface 310 along the shunt body 300, As the contact piece 420 is bent, the tip of the contact piece 420 is displaced laterally. When the shunt body 300 is fitted to the socket 110, the tip of the contact piece 420 contacts the pair of pins 210, respectively, and shorts both pins 210 through the shorting piece 400. Then, when the boss 520 of the female connector 500 is fitted into the connection hole 340, the tip of the contact piece 420 is pushed against the boss 520 of the female connector 500 from the pair of pins 210. Apart, the conduction between both pins 210 is broken.

The shunt body 300 is formed with a projection 360 formed of a flexible material. As a material which has flexibility, resin is mentioned, for example. The protrusion 360 may be formed of the same material as the shunt body 300, and the shunt body 300 and the protrusion 360 may be integrally formed. In this embodiment, four projections 360 are formed at substantially equal intervals in the circumferential direction, but the number and arrangement of the projections 360 of the present invention are not limited by this. The projection 360 is formed in a rod shape. The proximal end of the protrusion 360 is formed on the outer surface of the shunt body 300. As shown in FIG. 7, the projection 360 extends from the base end to the outside of the shunt body 300 at an angle θ within 90 degrees from the direction parallel to the central axis of the shunt body 300 and toward the top surface 320. It extends toward the inclined direction. This outer side means the side away from the central axis of the shunt body 300. In that case, it may be outside of the radial direction, or may be outside of an axis forming an angle with the radial direction when viewed in the direction of the central axis. When the tip of the projection 360 is pushed toward the connection hole 340 of the shunt body 300, the projection 360 is bent and deformed, and when the shunt body 300 is fitted to the socket 110, the projection 360 is Is restored to protrude into the engagement recess 114.

The shunt body 300 is provided with an accommodating recess 350 recessed concavely from the outer circumferential surface 330 toward the connection hole 340. The accommodation recess 350 is formed to accommodate at least a portion of the projection 360 when the projection 360 is bent and deformed toward the connection hole 340. The base end of the projection 360 is formed in the accommodation recess 350. And when the tip end of the projection 360 is pushed toward the connection hole 340 of the shunt body 300, it is comprised so that the projection 360 may bend | deform and escape to the accommodating recess 350. As shown in FIG.                     

As shown in FIG. 7, when the shunt body 300 is fitted to the socket 110 at the distal end of the projection 360, the opening 112 of the socket 110 among the surfaces constituting the engaging recess 114. The restricting surface 361 is formed to contact or replace the first surface 114a near ().

1, 8 and 9, the female connector 500 includes a box-shaped connector body 510, a prismatic boss 520 projecting from the bottom of the connector body 510, It is provided in the connector main body 510 and the boss 520, and has the contactor 530 which opens a connection port in the front-end | tip of the boss 520. An electric wire W is connected to the contactor 530, and the electric wire W is connected to a control means for sending electrical energy to the squib 200. The female connector 500 also includes a locking piece 540 protruding from the connector body 510 on both sides of the boss 520. The claw 541 which came outward is formed in the front-end | tip of the engaging piece 540. As shown in FIG. The female connector 500 also includes a slider 550 that slides along the boss 520 through the connector body 510. The slider 550 includes a first wedge 551 which moves up and down along the front of the boss 520 facing the contact piece 420 when the boss 520 is fitted into the connection hole 340, A second wedge 552 is formed between the boss 520 and the catching piece 540 and partially exposed from the window of the catching piece 540. The uppermost surface of the slider 550 which emerged toward the uppermost surface side of the connector body 510 is formed in a planar shape and is a button 553. There are various other structures of the female connector. For example, the female connector 500 which isolate | separated the engaging piece 540 from the connector main body 510, and was integral with the 2nd wedge 552 is illustrated. At this time, by pressing the button 553, the locking piece 540, the first wedge 551 and the second wedge 552 simultaneously slide. The shunt of the present invention also targets a female connector of a simpler form, which does not include some or all of a claw, a locking piece, a slider, a wedge, a button, and the like.

In the shunt body 300, two U-shaped notches 370 are formed at positions facing each other with the central axis of the shunt body 300 interposed therebetween. When the female connector 500 is fitted to the shunt body 300, the engaging piece 540 of the female connector 500 is fitted to the notch portion 370. The invention includes embodiments of shunts that do not form such notches.

380 is a two boss formed on the outside of the shunt body 300, 115 is a cavity formed concavely recessed on the circumference of the opening 112 of the socket 110, the boss 380 is fitted into the cavity 115 By being fitted, the shunt body 300 is prevented from rotating. The present invention includes an embodiment of a shunt that does not form such a boss on the shunt body, and an embodiment of a shunt for a socket without a cavity.

The operation and effects of the shunt S of the first embodiment will be described. As shown in Fig. 9, when the shunt body 300 is fitted to the socket 110, a pair of pins 210 of the squib 200 enter the connection hole 340 from the bottom face side. At this time, since the shorting piece 400 contacts both pins 210 and shorts them, the squib 200 does not function. When the female connector 500 is fitted into the connection hole 340 from the top surface side, the short-circuit piece 400 is pushed by the female connector 500 to separate it from the pair of pins 210 and the female connector 500 is paired. Is connected to the pin 210, and the actuation circuit of the squib 200 is operated to enable the inflator. That is, when the boss 520 of the female connector 500 is fitted to the connection hole 340 in a state where the slider 550 is pulled up toward the top surface of the connector body 510, the contact 530 of the female connector 500 is fitted. Is connected to the pair of pins 210, and the claw 541 of the locking piece 540 is caught by the engaging recess 114 of the socket 110. Subsequently, when the slider 550 is slid to the front end side of the boss 520 by pressing the button 553, the contact pieces 420 are paired because the first wedge 551 pushes the contact pieces 420 outward. It is separated from the pin 210, and thereby the operating circuit of the squib 200 is operated. In addition, since the second wedge 552 pushes the locking piece 540 of the female connector 500 outward, the claw 541 of the locking piece 540 strongly restrains the engagement recess 114 of the socket 110. Takes

When assembling the shunt (S) to the socket 110, when the shunt body 300 is inserted into the socket 110, the tip of the projection 360 by the inner peripheral surface 113 of the socket 110 is the shunt body ( It pushes toward the connection hole 340 of 300, and the projection 360 deforms and escapes toward the connection hole 340. FIG. In this case, since the projections are bent and deformed, a large displacement of the tip can be obtained even with a small force as compared with compressing and deforming the bulge portion 390 and the shunt body 300 'as in the comparative example of FIG. Therefore, compared with forming the bulging part 390 in the outer peripheral surface 330 'of the shunt body 300', the frictional force which acts on the projection 360 and the inner peripheral surface 113 of the socket 110 is reduced. As a result, the insertion force of the shunt S into the socket 110 is reduced, and the workability of assembling the shunt S into the socket 110 is improved.

When the shunt body 300 is fitted to the socket 110, the protrusion 360 recovers and protrudes to a sufficient length into the coupling recess 114. In addition, since the frictional force acting on the protrusion 360 and the inner circumferential surface 113 of the socket 110 is reduced, scratching of the protrusion 360 is reduced. Therefore, compared with the comparative example of FIG. 14, the engagement length of the engagement recessed part 114 of the projection 360 is sufficiently long, the holding force of the shunt S by the inflator is improved, and the Falling out of the inflator is reliably prevented.

When the projection 360 protrudes into the engagement recess 114, the tip is deformed greatly by restoring from the state where the projection 360 is bent and deformed, so that compared with the comparative example of FIG. Is obtained. Therefore, it becomes easy to confirm that the projection 360 is engaged with the engagement recessed part 114, and work is not finished in the state of semi-coupling which is not fully engaged. Therefore, the holding force of the shunt S by the inflator is improved, and the falling off of the shunt S from the inflator can be reliably prevented.

As for the processus | protrusion in the shunt of this invention, the base end should just be formed in the outer surface of the shunt body. Therefore, the present invention includes an embodiment in which the proximal end of the projection 360 is formed on the outer circumferential surface 330 of the shunt body 300, as in the shunt of the second embodiment shown in FIG. On the other hand, in the first embodiment, the receiving concave portion 350 recessed from the outer circumferential surface 330 is formed in the shunt body 300, and the base end of the projection 360 is formed in the receiving concave portion 350. FIG. In addition, when the tip end of the projection 360 is pushed toward the connection hole 340 of the shunt body 300, the projection 360 is bent and deformed so as to escape to the receiving recess 350. In this case, when the tip end of the projection 360 is pushed toward the connection hole 340 of the shunt body 300 by the inner circumferential surface 113 of the socket 110, the projection 360 is bent and deformed to accommodate the receiving recess 350. Escape to. Therefore, even when the clearance between the outer peripheral surface 330 of the shunt body 300 and the inner peripheral surface 113 of the socket 110 is small, the fitting of the shunt body 300 to the socket 110 is possible.                     

The present invention does not limit the tip shape of the projection. Therefore, the tip includes rounded protrusions, such as hemispherical shape, and protrusions having sharp tips. On the other hand, when the shunt body 300 is fitted to the socket 110 at the distal end of the projection 360 of the first embodiment, the opening 112 of the socket 110 is formed among the surfaces constituting the engaging recess 114. The restricting surface 361 is formed to contact or replace the first surface 114a near (). In this way, even if the shunt body 300 tries to be pulled out of the socket 110 after the shunt body 300 is fitted into the socket 110, the restricting surface 361 of the protrusion 360 is engaged with the engaging recess 114. By contacting and supporting the first surface 114a of the shunt, the holding force of the shunt S by the inflator is further improved, and the dropping of the shunt S from the inflator is more reliably prevented.

Fig. 11 shows the projection 360 of the shunt S of the third embodiment. This shunt S is different from the first embodiment only in the shape of the projection 360. In this shunt S, when the shunt body 300 is fitted to the socket 110 inside the tip end of the projection 360, it is formed in the opening 112 of the socket 110 rather than the engaging recess 114. A stopper 362 is in contact with the socket inner circumferential surface 113 of the near side. In this way, even if the shunt body 300 tries to be pulled out of the socket 110 after the shunt body 300 is fitted into the socket 110, the tip of the protrusion 360 is a surface constituting the coupling recess 114. Since the stopper 362 is in contact with the inner circumferential surface 113 of the socket, the holding force of the shunt S by the inflator is further improved, and the protrusion 360 is excessively deformed. Is prevented. In addition, when the stopper 362 contacts the socket inner circumferential surface 113, the effect is improved, and a larger click feeling is obtained. Therefore, it becomes easier to confirm that the projection 360 is engaged with the engagement recessed portion 114, and it is further prevented that the work is finished in the state of semi-engagement. Therefore, the holding force of the shunt S by the inflator is further improved, and the falling off of the shunt S from the inflator is more reliably prevented.

Fig. 12 shows the projection 360 of the shunt S of the fourth embodiment. This shunt S differs only in the shape of the projection from the first embodiment. In this shunt S, when the shunt body 300 is fitted to the socket 110 on the outer side of the tip end of the projection 360, the stopper 363 which contacts the inner part of the engaging recess 114 is Formed. In this embodiment, the inner side is exemplified by the third surface 114c of the surfaces constituting the engaging recess 114. The inner part shows the part of the outer side of the socket radial direction in the engagement recessed part 114, and is not limited to the 3rd surface 114c of the engagement recessed part 114 in this embodiment. In this way, even if the shunt body 300 tries to be pulled out of the socket 110 after the shunt body 300 is fitted into the socket 110, the tip of the protrusion 360 is a surface constituting the coupling recess 114. Since the stopper 363 contacts the third surface 114c, which is the inner portion of the coupling recess 114, is held in contact with the one surface 114a, and the holding force of the shunt S by the inflator is further improved. The protrusion 360 is prevented from being excessively deformed. In addition, when the stopper 363 contacts the third surface 114c which is the inner side of the engaging recess 114, the effect is improved and a larger click feeling is obtained. Therefore, it becomes easier to confirm that the projection 360 is engaged with the engaging recess 114, and the work of ending the work in the state of semi-coupling is further prevented. Therefore, the holding force of the shunt S by the inflator is further improved, and the falling off of the shunt S from the inflator is more reliably prevented.                     

Fig. 13 shows the projection 360 of the shunt S of the fifth embodiment. This shunt S is different from the first embodiment only in the shape of the projection 360. Here, the first surface 114a which is the surface close to the opening 112 of the socket 110 among the surfaces constituting the engaging recess 114 is formed to be perpendicular to the central axis of the cylinder of the socket 110. The restricting surface 361 at the tip of the projection 360 of the shunt S is formed to be parallel to the first surface 114a which is the surface constituting the engaging recess 114.

By description of such an Example, the shunt of the 1st squib demonstrated by the outline | summary of the invention was fully disclosed. In addition, the description of these examples has also sufficiently described the shunts of the second to fifth squibs described below.

In the shunt of the second squib, in the shunt of the first squib, the shunt body has an accommodating recess which is recessed from the outer circumferential surface, the proximal end of the protrusion is formed in the accommodating recess, and the tip of the protrusion is the shunt body. When it is pushed toward the connection hole of the stone, it is comprised so that a stone may deform and escape to a receiving recess.

In this case, when the tip of the projection is pushed toward the connecting hole of the shunt body by the inner circumferential surface of the socket, the projection is bent and deformed to the receiving recess. Therefore, even when the clearance between the outer circumferential surface of the shunt body and the inner circumferential surface of the socket is small, the shunt body can be fitted to the socket.

The shunt of the third squib is in the shunt of the first or second squib, and when the shunt body is fitted to the socket at the distal end of the projection, the third squib is in contact with the surface close to the opening of the socket. A confronting regulatory surface is formed.                     

In this case, even if the shunt body tries to be pulled out of the socket after the shunt body is fitted into the socket, the restricting surface of the protrusion contacts and supports the surface closest to the opening of the socket, so that the shunt by the inflator The holding force is further improved, so that falling off of the shunt from the inflator is more reliably prevented.

The shunt of the fourth squib is closer to the opening of the socket than the engaging recess when the shunt body is fitted into the socket in the shunt of any of the first to third squibs. The stopper which contacts the inner peripheral surface of the socket | side is protruded and formed.

In this case, even if the shunt body is to be pulled out of the socket after the shunt body is fitted into the socket, the tip of the projection contacts and supports the surface constituting the coupling recess, and the stopper contacts the inner circumferential surface of the socket, so that the shunt by the inflator In addition, the holding force is further improved, and the protrusion is prevented from being excessively deformed. In addition, when the stopper comes into contact with the inner circumferential surface of the socket, the effect is improved and a larger click feeling is obtained. Therefore, it becomes easier to confirm that the projection is engaged in the engaging recess, and further, the end of the work in the state of semi-engaged is further prevented. Therefore, the holding force of the shunt by the inflator is further improved, and the falling off of the shunt from the inflator is more reliably prevented.

The shunt of the fifth squib is a stopper in contact with the inner side of the engaging recess when the shunt body is fitted to the socket on the outer side of the tip of the protrusion in the shunt of any one of the first to fourth. Is formed.                     

In this way, even if the shunt body is to be pulled out of the socket after the shunt body is fitted into the socket, the tip of the projection contacts and supports the surface constituting the coupling recess, and the stopper contacts the inner part of the coupling recess. In addition, the holding force of the shunt is further improved, and the protrusion is prevented from being excessively deformed. In addition, when the stopper comes into contact with the inside of the engaging concave portion, the effect is improved and a larger click feeling is obtained. Therefore, it becomes easier to confirm that the projection is engaged with the engaging recess, and further, the work is not prevented from being finished in the semi-joined state. Therefore, the holding force of the shunt by the inflator is further improved, and the falling off of the shunt from the inflator is more reliably prevented.

As described above, according to the present invention, the holding force of the shunt by the inflator can be sufficiently obtained, the dropping of the shunt from the inflator can be prevented, and the insertion force of the shunt into the socket can be reduced to assemble the shunt into the socket. Can improve the sex.

Claims (9)

It is opened in the surface of the housing 100 of the inflator, and it is concave cylindrically inward of the housing 100 from this opening, and it is recessed radially outward from the inner peripheral surface 113 in the middle part of the depth direction. Shunt (S) which fits into the socket 110 having the engaging recess 114 and shorts the pair of pins 210 of the squib 200 protruding from the bottom surface 111 of the socket 110. )as, The connecting hole 340 is formed in a cylindrical shape to fit the socket 110, and a pair of pins 210 of the squib 200 enters the center from the bottom side and the female connector 500 is fitted from the top side. A shunt body 300 formed therethrough; It is formed in the shunt body 300, when the shunt body 300 is fitted to the socket 110, it contacts the pair of pins 210 of the squib 200, the female connector 500 is connected to the connection hole ( A shorting piece 400 pushed by the female connector 500 and fitted from the pair of pins 210 of the squib 200 when fitted to the 340; And A projection 360 formed of a flexible material and formed on the shunt body 300, The proximal end of the protrusion 360 is formed on the outer surface of the shunt body 300, and the protrusion 360 is within 90 degrees from the proximal end in a direction parallel to the central axis of the shunt body 300 and toward the uppermost surface 320. Extend in a direction inclined outward of the shunt body 300 at an angle, When the tip of the projection 360 is pushed toward the connection hole 340 of the shunt body 300, the projection 360 is bent and deformed, and when the shunt body 300 is fitted to the socket 110, the projection 360 is And shunt of the squib characterized in that it is configured to recover and project into the engagement recesses (114). The shunt body 300 is formed with a receiving recess 350 recessed from the outer peripheral surface 330, the proximal end of the projection 360 is formed in the receiving recess 350, the projection ( The shunt of the squib characterized in that the projection 360 is bent and deformed to escape to the receiving recess 350 when the tip of the 360 is pushed toward the connection hole 340 of the shunt body 300. The opening of the socket 110 among the surfaces constituting the coupling recess 114 when the shunt body 300 is fitted to the socket 110 at the tip of the protrusion 360. A shunt of a squib, characterized in that a regulating surface 361 is formed to contact or replace the surface 114a close to (112). The opening of the socket 110 rather than the engaging recess 114 when the shunt body 300 is fitted to the socket 110 inside the tip end of the projection 360. A squib shunt, characterized in that a stopper (362) in contact with the socket inner peripheral surface (113) proximate to 112 is formed to protrude. The inner side of the distal end of the projection 360 is closer to the opening 112 of the socket 110 than the engaging recess 114 when the shunt body 300 is fitted to the socket 110. A squib shunt, characterized in that a stopper (362) in contact with the socket inner peripheral surface (113) protrudes. The inner side 114c of the engaging recess 114 when the shunt body 300 is fitted to the socket 110 on the outer side of the tip of the projection 360 according to claim 1 or 2. A squib shunt, characterized in that a stopper (363) to be formed. The stopper 363 according to claim 3, wherein when the shunt body 300 is fitted to the socket 110 on the outer side of the tip end of the projection 360, the stopper 363 contacts the inner portion 114c of the coupling recess 114. Shunt of the squib characterized by the above-mentioned. The stopper 363 according to claim 4, wherein the stopper 363 contacts the inner portion 114c of the coupling recess 114 when the shunt body 300 is fitted to the socket 110 on the outer side of the tip end of the protrusion 360. Shunt of the squib characterized by the above-mentioned. The stopper 363 according to claim 5, wherein the stopper 363 contacts the inner portion 114c of the coupling recess 114 when the shunt body 300 is fitted to the socket 110 on the outer side of the tip end of the protrusion 360. Shunt of the squib characterized by the) is formed.

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